diff options
| -rw-r--r-- | ctdb/common/ctdb_lockwait.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/ctdb/common/ctdb_lockwait.c b/ctdb/common/ctdb_lockwait.c index 6d733155e4..304a0a413e 100644 --- a/ctdb/common/ctdb_lockwait.c +++ b/ctdb/common/ctdb_lockwait.c @@ -59,7 +59,16 @@ static int lockwait_destructor(struct lockwait_handle *h) return 0; } - +/* + setup a non-blocking chainlock on a tdb record. If this function + returns NULL then it could not get the chainlock. Otherwise it + returns a opaque handle, and will call callback() once it has + managed to get the chainlock. You can cancel it by using talloc_free + on the returned handle. + + It is the callers responsibility to unlock the chainlock once + acquired + */ struct lockwait_handle *ctdb_lockwait(struct ctdb_db_context *ctdb_db, TDB_DATA key, void (*callback)(void *), void *private_data) |